Thermally Stimulated Exoelectron Emission, Thermoluminescence, and Impurities in LiF and BeO

Becker, Klaus; Cheka, J.S.; Oberhofer, M.

doi:10.1097/00004032-197009000-00002

Cited by 36 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Below 300 "C surface charge and specific resistance are closely related, both growing with decreasing temperature. This result suggests that compensation is mainly caused by free charge carriers, which are present in Thermalox due to a rather high impurity content [2].…”

Section: Discussionmentioning

confidence: 94%

Influence of pyroelectric properties on the thermally stimulated exoelectron emission (TSEE) of BeO

Scharmann

Schmirler

1986

phys. stat. sol. (a)

View full text Add to dashboard Cite

BeO ceramics and ‐thin films, prepared for dosimetric use, are investigated with respect to their TSEE response and their pyroelectric properties. The surface potential of ceramic BeO is found to vary during heating, cooling, and application of external polarising fields. Absorption of water affects the TSEE yield as well as the dependence of the surface potential on the sample temperature. Pyroelectric fields are supposed to be the source of the strong influence of water on the TSEE response of ceramics. Thin films do not show these effects.

show abstract

Section: Discussionmentioning

confidence: 94%

Influence of pyroelectric properties on the thermally stimulated exoelectron emission (TSEE) of BeO

Scharmann

Schmirler

1986

phys. stat. sol. (a)

View full text Add to dashboard Cite

show abstract

“…The natural isotopic abundance of lithium fluoride is 7.5% 6 Li and 92.5% 7 Li. Both TLD-600 and TLD-700 contain trace elements shown in Table 5.1 (Becker et al 1970). Magnesium 300…”

Section: Lithium Fluoridementioning

confidence: 99%

Hanford External Dosimetry Technical Basis Manual PNL-MA-842

Rathbone¹

2007

View full text Add to dashboard Cite

The Hanford External Dosimetry Program (HEDP) provides support to the U.S. Department of Energy's Richland Operations Office (RL), Office of River Protection (ORP), Pacific Northwest Site Office (PNSO), and DOE contractor radiation protection organizations in determining doses-of-record from external sources of radiation. The Pacific Northwest National Laboratory (PNNL) (a) administers the HEDP in coordination with Hanford contractor radiation protection organizations to ensure consistent site-wide implementation of external dosimetry practices for Hanford workers and visitors. Coordination of dosimetry practices at Hanford is accomplished through the Hanford Personnel Dosimetry Advisory Committee (HPDAC). Technical services provided by the HEDP include personnel, area, nuclear accident, and environmental dosimetry capabilities that comply with DOE requirements in 10 CFR 835, the DOE Laboratory Accreditation Program (DOELAP) performance standard (DOE 1986a) and DOELAP handbook (DOE 1986b) as well as selected DOE guidance in the Radiological Control standard (DOE 1999a), and the External Dosimetry Program Guide (DOE 1999b). The primary purposes of this Hanford External Dosimetry Technical Basis Manual are to document the design and implementation of the external dosimetry system used at Hanford, and to document the rationale for the methods used. This manual includes documentation of the technical basis for the dosimeter design, processing protocols, dose calculation methodology, and recommended dosimeter use in the field, in a manner intended to demonstrate compliance with 10 CFR 835 and Hanford requirements and to ensure the defensibility of the doses of record. A secondary purpose of this manual is to provide general information on dosimeter response characteristics and guidance on the proper use and limitations

show abstract

“…The energy dependence of the detectors can be modified by encapsulation in neutron absorbers. If dosimeter glasses with a high lithium and/or boron content such as our recently developed energy independent silver-activated lithium borate glasses (22) are used as "radiators," the radiophotoluminescence in the glass could indicate the sum of thermal neutron, X-ray and gamma radiation dose, while the thermal neutron component can be determined by etch pit counting of the plastic foil. Also, foils could be made which are impregnated with elements undergoing (n, a ) reactions.…”

Section: Thermal Epithermal and Fast Neutron Dosimetrymentioning

confidence: 99%

Alpha Particle Registration in Plastics and Its Applications for Radon and Neutron Personnel Dosimetry

Becker¹

1969

Health Physics

Self Cite

View full text Add to dashboard Cite

The number and size of visible alpha particle tracks in different cellulose derivatives (nitrate, acetate, acetobutyrate, and propionate) and other polymer foils depends mainly on the chemical structure and physical treatment of the foils, the presence or absence of oxygen during irradiation, the humidity and/or chemical pre-or post-treatment of the foils, and on the etching conditions. The stability of unetched tracks decreases close to the softening temperature of the plastics. Up to 100°C the fading in the investigated foils is small. Cellulose derivates are most suitable for several applications, such as (a) simple and inexpensive personnel dosimetry of radon and radon daughters in uranium mines ;(b) thermal neutron dosimetry using (n, a ) reactions in B, Li, etc.; ( c ) fast neutron measurements via (n, a ) reactions and recoil reactions in the foil. The sensitivity of this method is superior to the fission fragment registration above ca. 1 MeV, but there is a directional dependence up to -30%. Very high energy neutrons can also be measured via spallation in high-Z cover materials. Some depth-dose measurements for neutrons of different energies are reported.

show abstract

Thermally Stimulated Exoelectron Emission, Thermoluminescence, and Impurities in LiF and BeO

Cited by 36 publications

References 6 publications

Influence of pyroelectric properties on the thermally stimulated exoelectron emission (TSEE) of BeO

Influence of pyroelectric properties on the thermally stimulated exoelectron emission (TSEE) of BeO

Hanford External Dosimetry Technical Basis Manual PNL-MA-842

Alpha Particle Registration in Plastics and Its Applications for Radon and Neutron Personnel Dosimetry

Contact Info

Product

Resources

About